Tag Archives: mitral valves

To Mary in Wyoming: Porcine heart valves (made from pig hearts) have been used to replace narrowed and/or leaking human aortic and mitral valves since about 1965. Tissue valves eliminate the need for anticoagulation with warfarin that is required for mechanical prostheses. On the downside, they are not as durable as mechanical valves and therefore […]
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